Stud.



C, i. OSTERBERG.

STUD.

APPLICATION FILED MAY 25, 1918.

1,281,997. Patented oat. 15, 1918.

.4 I 11 10 i Even/$07? am Il I %TATE% FFIE CARL I. OSTERBERG, OF CRANSTON, RHODE ISLAND, ASSIGNOR TO 0. C. DEVEREUX COMPANY, A CORPORATION OF RHODE ISLAND.

STUD.

Specification of Letters Patent.

Patented Oct. 15, 1918.

Application filed May 25, 1918. Serial No. 236,598.

To all whom it may concern.-

Be it known that I, CARL I. Os'rnnnnnc, a citizen of the United States, residing at Cranston, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Studs, of which the following is a specification.

My invention relates to studs of the pipe stem type.

The essential objects of my invention are to prevent the accidental engagement of the spring fingers with the person or clothing of the wearer; to prevent strain upon the fingers; to insure a strong grip between the engaged parts; and to attain these ends in a simple and inexpensive structure.

To the above ends my invention consists in such parts and combinations of parts as fall within the scope of the appended claim.

In the accompanying drawings which form a part of this specification,

Figures 1 and 2, are side elevations of the stud in open and closed positions respectively,

Figs. 3 and 4, like elevations of the same respectively partially in central longitudinal section, and

Fig. 5 an end elevation of the sleeve.

Like reference characters indicate like parts throughout the views.

My device consists in detail of a head 6 upon a tubular post 7 provided with an opening 8 and integral with a sleeve 9 disposed at right angles to the post. The end of the sleeve is provided with slots 10 to form compressible resilient arms 11 provided intermediate their length with arcuate external grooves 12, or an annular groove in the assemblage of arms.

The grooves are bounded on each side by resultant external arcuate shoulders 18 and 14 respectively, or an annular shoulder on the assemblage of arms. The shoulders 1 1 are nearer the ends of the arms than the shoulder 13. The material at the ends of the arms from the shoulders 14 is inwardly inclined forming guide portions or fingers 15.

A rod or shoe 16 of greater length than the sleeve passes through the latter longitudinally. The body portion 17 of the rod is of less diameter than the sleeve so that it is spaced therefrom, as at 18, and is engaged only by the outer ends of the arms 11. Upon the outer end of the rod is a ball or shoulder 20 of greater diameter than the sleeve which forms in conjunction with the end of the sleeve a stop against the escape of the latter from the rod. The rod 16 has near its end adjacent the body portion 17 a reduced portion or neck 21 forming an an nular shoulder 22. Integral with the end of the neck is a hollow conical head 23, having a solid point 2 1 and outwardly and rearwardly inclined flange 25 provided with a rolled over edge constituting an internal annular bead or shoulder 26. This bead is of less diameter than the sleeve 9,'but more than the diameter of the neck 21, and is in the path of the portions 15 of the sleeve.

The operation of the stud is as follows. When the rod is manually withdrawn from the position shown in Fig. t toward the position shown in Fig. 3, the bead 26 rides on the beveled portions 15 of the arms and compresses the latter sulfioiently to over-ride the same and snap into the annular seat or seats 12. The parts are held against accidental escape by the resiliency of the arms combined with the shoulders l3 and 14.

It will be noted that the arms 11 including the portions 15 have no outward inclination adapted to accidentally engage a fabric and become bent but are inwardly directed.

Furthermore the strain upon'the fingers, being compressive, does not tend to set the spring arms. The arms are further protected against strain by the fact that when they have become compressed the required extent their edges contact with each other.

I claim In a stud of the type set forth, the combination of a sleeve, a post on the sleeve, a head on the post, resilient arms on the sleeve provided near their ends with an annular series of transverse seats, inwardly inclined fingers on the extremities of the arms, a rod slidably mounted in the sleeve and provided with a retracted neck portion, a hollow tapering head comprising a point integral with the neck portion 01 the rod,

and a tapering flange adapted to house the fingers, and an internal annular shoulder on the flange adapted to register in the seats.

In testimony whereof I have afiixed my 10 signature.

CARL I. OSTERBERG.

Uopies oi this patent may be obtained for five cents each, by addressing the fiommissioner oi Patents, Washington, 3. 

